Upgrades Guide
When and How to
Upgrade Your Solar
Started with a 400W kit? Know exactly when it makes sense to add panels, add battery storage, or scale to your state's legal maximum. More watts means more savings — here's how to plan it.
System Tiers
Battery vs. No Battery
The single biggest upgrade decision is whether to add battery storage. Here's the honest comparison.
Battery storage pays for itself through higher self-consumption. A system without a battery typically achieves 40–60% self-consumption (only saving electricity when you're home and using it). A battery-equipped system reaches 80–95%, capturing morning and evening loads that would otherwise come from the grid.
5 Signs It's Time to Upgrade
Your electricity bill keeps climbing
If your utility rate has increased 5%+ this year, every additional watt of solar you add saves proportionally more. The math gets better the longer you wait to upgrade — except your bill also gets worse.
You're exporting too much power
If your app shows substantial generation during midday when you're not home, you're losing that electricity to the grid without credit. Adding battery storage or a second panel captures that excess.
You moved to a sunnier location
Relocating from the Pacific Northwest to the Southwest could increase your solar generation by 40–60% with the same hardware. This alone may justify upgrading to a larger system.
Your state raised its watt cap
If your state's initial law capped at 800W but was subsequently amended to allow 1,200W, you can legally upgrade your system — potentially doubling your savings without replacing your existing panels.
You added high-draw appliances
A new EV, heat pump, or electric dryer significantly raises your electricity consumption — and your savings potential from solar. A larger system is more impactful when your baseline usage is higher.
Recommended Upgrade Path
You don't need to buy everything at once. Many homeowners start with 400W and one battery, verify the savings on their bill, then add a second panel 12–24 months later. Each upgrade has its own payback period.
Smart Features Worth Having
Real-time monitoring app
Essential. Shows live watt output, daily kWh, cumulative savings. Without monitoring, you can't verify the system is working or troubleshoot drops in output.
Configurable output limit
Some inverters let you set a maximum output wattage via app. Useful if your state cap is lower than your panel's nameplate wattage, or if you want to limit export.
Grid export timer
Schedule when the system can export to the grid. Prevents export during peak grid stress (when utilities may apply demand charges) or when rates are low.
Smart home integration
Connects to Home Assistant, Google Home, or Amazon Alexa. Lets you automate high-draw appliances (dishwasher, laundry) to run during peak solar generation hours.
Find the right system for your state
Every state has different watt caps and electricity rates. Use our state-specific calculators to see exactly how each tier performs for your location.